/* App shell : sidebar, topbar, contenu (Design System §3) */
.tj-app { min-height: 100vh; }

.tj-sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--tj-sidebar-w);
  background: var(--tj-sidebar);
  border-right: 1px solid var(--tj-border);
  display: flex;
  flex-direction: column;
  z-index: 1030;
  transition: width var(--tj-dur-panel) ease-in-out;
}
.tj-sidebar-brand {
  height: var(--tj-topbar-h);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 20px;
  font-weight: 700;
  font-size: 16px;
  color: var(--tj-text);
  border-bottom: 1px solid var(--tj-border);
  white-space: nowrap;
  overflow: hidden;
}
.tj-sidebar-brand:hover { text-decoration: none; color: var(--tj-text); }
.tj-logo {
  width: 32px; height: 32px; flex: 0 0 32px;
  border-radius: 9px;
  display: grid; place-items: center;
  background: var(--tj-primary); color: var(--tj-on-primary);
  font-size: 15px; font-weight: 700;
}
.tj-nav { flex: 1; padding: 16px 12px; overflow-y: auto; display: flex; flex-direction: column; gap: 2px; }
.tj-nav-section { margin-top: auto; padding: 12px; border-top: 1px solid var(--tj-border); display: flex; flex-direction: column; gap: 2px; }
.tj-nav-link {
  display: flex; align-items: center; gap: 12px;
  height: 40px; padding: 0 12px;
  border-radius: var(--tj-radius-control);
  color: var(--tj-text-muted);
  font-weight: 500;
  white-space: nowrap; overflow: hidden;
  transition: background-color var(--tj-dur-hover) ease-out, color var(--tj-dur-hover) ease-out;
}
.tj-nav-link i { font-size: 18px; flex: 0 0 20px; text-align: center; }
.tj-nav-link:hover { background: var(--tj-surface-hover); color: var(--tj-text); text-decoration: none; }
.tj-nav-link.active { background: var(--tj-primary-soft); color: var(--tj-text); }
.tj-nav-link.active i { color: var(--tj-primary); }
.tj-nav-label { overflow: hidden; text-overflow: ellipsis; }

.tj-main { margin-left: var(--tj-sidebar-w); min-height: 100vh; display: flex; flex-direction: column; transition: margin-left var(--tj-dur-panel) ease-in-out; }

.tj-topbar {
  position: sticky; top: 0; z-index: 1020;
  height: var(--tj-topbar-h);
  display: flex; align-items: center; gap: 12px;
  padding: 0 24px;
  background: color-mix(in srgb, var(--tj-bg) 88%, transparent);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--tj-border);
}
.tj-topbar-title { font-size: 18px; font-weight: 600; margin: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tj-topbar-actions { margin-left: auto; display: flex; align-items: center; gap: 8px; }

.tj-content { width: 100%; max-width: var(--tj-content-max); margin: 0 auto; padding: 24px; flex: 1; }
.tj-page-header { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 20px; }
.tj-page-header h1 { margin: 0; }
.tj-page-header p { margin: 4px 0 0; color: var(--tj-text-muted); }
.tj-breadcrumb { font-size: 13px; color: var(--tj-text-muted); margin-bottom: 6px; }
.tj-breadcrumb a { color: var(--tj-text-muted); }
.tj-breadcrumb a:hover { color: var(--tj-text); }

/* Sidebar repliée (desktop) */
.tj-sidebar-collapsed .tj-sidebar { width: var(--tj-sidebar-w-collapsed); }
.tj-sidebar-collapsed .tj-main { margin-left: var(--tj-sidebar-w-collapsed); }
.tj-sidebar-collapsed .tj-sidebar .tj-nav-label,
.tj-sidebar-collapsed .tj-brand-name { display: none; }
.tj-sidebar-collapsed .tj-sidebar .tj-nav-link { justify-content: center; padding: 0; }
.tj-sidebar-collapsed .tj-sidebar-brand { justify-content: center; padding: 0; }

.tj-auth { min-height: 100vh; display: grid; place-items: center; padding: 24px 16px; }
.tj-auth-card { width: 100%; max-width: 420px; }
.tj-auth-card.wide { max-width: 640px; }

/* Tablette : sidebar réduite par défaut */
@media (min-width: 768px) and (max-width: 1199.98px) {
  .tj-sidebar { width: var(--tj-sidebar-w-collapsed); }
  .tj-main { margin-left: var(--tj-sidebar-w-collapsed); }
  .tj-sidebar .tj-nav-label, .tj-brand-name { display: none; }
  .tj-sidebar .tj-nav-link { justify-content: center; padding: 0; }
  .tj-sidebar-brand { justify-content: center; padding: 0; }
  .tj-content { padding: 20px; }
}

/* Mobile : sidebar en offcanvas */
@media (max-width: 767.98px) {
  .tj-sidebar { transform: translateX(-100%); width: 280px; transition: transform var(--tj-dur-panel) ease-out; box-shadow: var(--tj-shadow-raised); }
  .tj-sidebar.show { transform: translateX(0); }
  .tj-sidebar .tj-nav-label, .tj-sidebar .tj-brand-name { display: inline; }
  .tj-main { margin-left: 0 !important; }
  .tj-topbar { padding: 0 12px; gap: 8px; }
  .tj-content { padding: 16px; }
  .tj-sidebar-backdrop { position: fixed; inset: 0; background: var(--tj-overlay); z-index: 1025; }
}
@media (min-width: 768px) {
  .tj-mobile-only { display: none !important; }
}
@media (max-width: 767.98px) {
  .tj-desktop-only { display: none !important; }
}